Ventilator



L. B. SMITH.

VENTILATOR. APPLICATION FILED JUNE 11, 1920.

avwentoz Patented 0ct.3, 1922.

2 SHEETS-SHEET L. B. SMITH.

VENTHATOR APPucmoN ms!) JUNE I], 1920.

Patented Oct. 3,, 1922.

2 SHEETS-SHEET 2.

awvewfoz LONZO B. SMITH, OF RICI-IWOOD, WEST VIRGINIA, ASSIGNOR OF ONE-HALF TO WILLIAM B. SHE-EVE, 01E AKRON, OHIO.

VENTILA'IOR.

. Application filed June 17,

To all whom it may concern:

Be it known that I, LONZO B. SMITH, a citizen. of the United States, residing at Richwood, in the county of Nicholas and State of lVest Virginia, have invented certain new and useful Improvements in Ventilators, of which the following is a specification. I p

This invention relates to ventilators and the primary object of the invention is to provide an improved ventilator for association with foul air exhausting pipes, smoke stacks and the like which is so constructed that a vacuum will always be created therein for effectively exhausting foul air or gases at all times, irrespective of the direction in which the wind isv blowing.

Another obj ect of, the invention is the provision of an improved ventilator constructed on the principal of an ejector which embodies a storm band so shaped and arranged in relation to the neck of the ventilator as to create a vacuum in the neck regardless of the direction of the air current, whether the same may be moving up, down or around the ventilator. a a

A further object of the invention is the provision of a ventilator having a storm band so shaped as to ofier little resistance to the air current, thereby creating a relatively strong vacuum in the neck of the ventilator. t

A further object of the invention is the provision of an improved ventilator in" which the parts thereof can be conveniently cut from a single blank of material, the cutting of the inside edge of one section forming the outside edge of the adjacent sections, the sections being so shaped as to permit the nesting thereof inside of the storm band, for storage orshipment.

A. still furtl'ier objectof the invention is to provide an. improved ventilator of the above character which is durable and efficient in. use, one that is simple and easy to manufacture, and'one which can be placed upon the market at a reasonable cost.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of the parts as will be hereinafter more specifically described, claimed and illustrated in the ac- 1920. Serial No. 389,641.

companying drawings, forming-a part of this specification, in which drawings:

Figure 1 is an elevation of the improved ventilator.

Figure 2 is a plan view of the same.

1 Figure 3 is a horizontal diametric section through the ventilator showing the method of nestingtheparts thereof inside of the storm band.

Figure 1 is a horizontal diametric section through the improved ventilator showing the same in its assembled position, and

Figure 5 is a plan View of the blank from which the ventilator is constructed.

Referring to the drawings, in detail, wherein similar reference characters designate corresponding parts throughout the several views, the, letter A generally in dicates the improved ventilator, which includes the cylindrical neck 10 which is adapted tobe secured at its lower end in any preferred manner to an air exhaust pipe orsmoke stack B. The upper end of the neck 10 is flared as at 11 and is extended into the lower end of the louver or deflector 12 and terminates short of the horizontal axis thereof. The louver or deflector 12 is substantially frusto-conical in shape and is disposed with its narrow end lowermost. The upper end of the louver 12 is flared outwardly as at 13 for a purpose which will hereinafter more fully appear. Disposed directly above and in spaced relation to the louver is the conical shaped top 14 and this top forms means for deflecting the course of the air currents and for preventing the entrance of rain and the like into the air exhausting pipe or stack B.

An annular storm band 15 is disposed around the louvre 12 and the cap 1 1 and is spaced at all points therefrom and includes the upper and lower oppositely extending substantially frusto-conical bands 16 and J7.

The meeting edges of the bands 16 and 17 are connectedtogether by a suitable joint 18. The upper inner edge of the band 16 extends inwardly a further distance toward the axis of the ventilator than the lower edge of the lower band 17 and the upper inner edge of the band 16 terminates in direct alignment with the lower edge of the cap 14? and the upper edge of the louver or deflector 12,

Suitable brackets 19, E20 and 21 are proided for holding the parts of the ventilator in correct relation to one another and these brackets may no of any desired shape and disposed around the ventilator in any preferred manner. The brackets are preferably former of strap iron or the like and when the parts are in their adjusted positions, the brackets are also placed in the storm band 15. The brackets 19 connect the conical cap 14; and the neck 10 together, while the brackets 2O connect the louver with the cap and neck and these brackets are carried by the intermediate portions of the brackets 19. The brackets 21 unite the cap 14, the storm band 15, and the louver together and the same extend downwardly and outwardly from the cap into engagement with the inner surface of the louver and then inwardly into engagement with the louver.

All of the parts of the ventilator are preferaloly formed of sheet metal but if so desireda part of the cap 14 may be made of transparent or translucent material for permitting the entrance of light into the building being ventilated.

The parts of the ventilator A are so shaped that thesame can be conveniently cut from a blank of sheet metal at one operation, thereby making a saving in the cut ting cost and preventing wasteof material. This is clearly shown in Figure 5 of the drawings and it can be seen that when the inner edge of one section is out, say the louver section 12, a portion of the outer edge of the section 17 of the storm band 15 is out.

In operation of the improved ventilator, the air currents will engage the outer inclined surfaces of the storm band 15 and will be deflected up and down and around the same as clearly indicated by the arrows. The air going by the upper and lower surface of the storm band will create a suction in the neck 10 and thereby cause the foul air,

between the storm band and the conical cap l l and the louver 12 as clearly shown by the arrows. This will also cause a suction or draft and cause the foul air, smoke or gas to pass up and out of the neck 10 and be tween the neck 10, the louver 12 and the storm band 15. If by any means the air currents are directed downwardly or upwardly against the ventilator, the inclined surfaces of the conical shaped cap l t and the frust-o conical shaped louver 12 will defiect the course of the same so as to guide the air currents between the storm band, louver and cap.

This will cause a vacuum or suction in the neck and effectively draw the foul air, smoke or gas therefrom. I

From the foregoing description, it can be seen that an improved and exceedingly simple form of ventilator is provided, which will effectively cause a continuous suction in the neck for exhausting the-foul air, smoke or gases therefrom and which can be manufactured at an exceedingly low cost and the parts thereof nested for shipping or storage.

Changes in details may be made without departing from the spirit or scope of the invention; but,

I claim:

A ventilator comprising a frusto-conical shaped louver, a cap disposed above and in spaced relation to the louver and terminating in direct alignment with the upper edge thereof, a cylindrical neck disposed in said louver and terminating short of the horizontal axis thereof the upper edge of said louver and said neck being flared outwardly, a storm band surrounding said louver and having upper and lower inc-lined faces, brackets extending from the lower edge of said. cap to said neck radially extending brackets carried by the first mentioned brackets and engaging the inner surface of said louver, and brackets carried by said cap and engaging the inner surface of said storm band and the outer surface of said louver.

LONZO B. SMITH. 

